2780100120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{907}}^1$

素因数の和:1058

約数の個数: 256

約数和(自身を含む): 9884851200

約数和(自身を除く): 7104751080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 89, 105, 120, 123, 140, 164, 168, 178, 205, 210, 246, 267, 280, 287, 328, 356, 410, 420, 445, 492, 534, 574, 615, 623, 712, 820, 840, 861, 890, 907, 984, 1068, 1148, 1230, 1246, 1335, 1435, 1640, 1722, 1780, 1814, 1869, 2136, 2296, 2460, 2492, 2670, 2721, 2870, 3115, 3444, 3560, 3628, 3649, 3738, 4305, 4535, 4920, 4984, 5340, 5442, 5740, 6230, 6349, 6888, 7256, 7298, 7476, 8610, 9070, 9345, 10680, 10884, 10947, 11480, 12460, 12698, 13605, 14596, 14952, 17220, 18140, 18245, 18690, 19047, 21768, 21894, 24920, 25396, 25543, 27210, 29192, 31745, 34440, 36280, 36490, 37187, 37380, 38094, 43788, 50792, 51086, 54420, 54735, 63490, 72980, 74374, 74760, 76188, 76629, 80723, 87576, 95235, 102172, 108840, 109470, 111561, 126980, 127715, 145960, 148748, 152376, 153258, 161446, 185935, 190470, 204344, 218940, 223122, 242169, 253960, 255430, 260309, 297496, 306516, 322892, 371870, 380940, 383145, 403615, 437880, 446244, 484338, 510860, 520618, 557805, 565061, 613032, 645784, 743740, 761880, 766290, 780927, 807230, 892488, 968676, 1021720, 1041236, 1115610, 1130122, 1210845, 1301545, 1487480, 1532580, 1561854, 1614460, 1695183, 1937352, 2082472, 2231220, 2260244, 2421690, 2603090, 2825305, 3065160, 3123708, 3228920, 3309643, 3390366, 3904635, 4462440, 4520488, 4843380, 5206180, 5650610, 6247416, 6619286, 6780732, 7809270, 8475915, 9686760, 9928929, 10412360, 11301220, 13238572, 13561464, 15618540, 16548215, 16951830, 19857858, 22602440, 23167501, 26477144, 31237080, 33096430, 33903660, 39715716, 46335002, 49644645, 66192860, 67807320, 69502503, 79431432, 92670004, 99289290, 115837505, 132385720, 139005006, 185340008, 198578580, 231675010, 278010012, 347512515, 397157160, 463350020, 556020024, 695025030, 926700040, 1390050060, 2780100120]

約数ペア:

[(1, 2780100120), (2, 1390050060), (3, 926700040), (4, 695025030), (5, 556020024), (6, 463350020), (7, 397157160), (8, 347512515), (10, 278010012), (12, 231675010), (14, 198578580), (15, 185340008), (20, 139005006), (21, 132385720), (24, 115837505), (28, 99289290), (30, 92670004), (35, 79431432), (40, 69502503), (41, 67807320), (42, 66192860), (56, 49644645), (60, 46335002), (70, 39715716), (82, 33903660), (84, 33096430), (89, 31237080), (105, 26477144), (120, 23167501), (123, 22602440), (140, 19857858), (164, 16951830), (168, 16548215), (178, 15618540), (205, 13561464), (210, 13238572), (246, 11301220), (267, 10412360), (280, 9928929), (287, 9686760), (328, 8475915), (356, 7809270), (410, 6780732), (420, 6619286), (445, 6247416), (492, 5650610), (534, 5206180), (574, 4843380), (615, 4520488), (623, 4462440), (712, 3904635), (820, 3390366), (840, 3309643), (861, 3228920), (890, 3123708), (907, 3065160), (984, 2825305), (1068, 2603090), (1148, 2421690), (1230, 2260244), (1246, 2231220), (1335, 2082472), (1435, 1937352), (1640, 1695183), (1722, 1614460), (1780, 1561854), (1814, 1532580), (1869, 1487480), (2136, 1301545), (2296, 1210845), (2460, 1130122), (2492, 1115610), (2670, 1041236), (2721, 1021720), (2870, 968676), (3115, 892488), (3444, 807230), (3560, 780927), (3628, 766290), (3649, 761880), (3738, 743740), (4305, 645784), (4535, 613032), (4920, 565061), (4984, 557805), (5340, 520618), (5442, 510860), (5740, 484338), (6230, 446244), (6349, 437880), (6888, 403615), (7256, 383145), (7298, 380940), (7476, 371870), (8610, 322892), (9070, 306516), (9345, 297496), (10680, 260309), (10884, 255430), (10947, 253960), (11480, 242169), (12460, 223122), (12698, 218940), (13605, 204344), (14596, 190470), (14952, 185935), (17220, 161446), (18140, 153258), (18245, 152376), (18690, 148748), (19047, 145960), (21768, 127715), (21894, 126980), (24920, 111561), (25396, 109470), (25543, 108840), (27210, 102172), (29192, 95235), (31745, 87576), (34440, 80723), (36280, 76629), (36490, 76188), (37187, 74760), (37380, 74374), (38094, 72980), (43788, 63490), (50792, 54735), (51086, 54420)]